HRE Ferdinand I's 14-Great Half-Aunt. HRE Charles VI's 19-Great Half-Aunt. U.S. President [WASHINGTON]'s 20-Great Half-Aunt. HRH Charles's 24-Great Grandmother. Lady Diana's 25-Great Grandmother. Louis XVII's 19-Great Grandmother. Poss. `Osawatomie' Brown's 24-Great Aunt. Jamie's 28-Great Half-Aunt.